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Paraboloskiagraph

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Uploaded by on Apr 13, 2010

A virtual model of a method generating a parabola with shadow. This method represents the conic nature of parabolas - the cone is made of ball's shadow and the intersecting plane is the floor. The focus of the parabola is exactly at the point where the ball touches the floor. The light is positioned at the same height as the top of the ball.

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Education

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Standard YouTube License

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  • Very clever

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